I have a question that I have not been able to find an answer too performing searches on various forums...
I have a 2011 WRX with the current mods listed in my signature. I'm about to go through another round of mods. I've purchased a Process West TMIC, Cobb BPV, GrimmSpeed EBCS and DW65c fuel pump. I'm going to install these and then get a pro tune.
My question is would it be worth also getting an after market up-pipe (grimmspeed vs Perrin) with these mods? I read on Perrin's website that there was about 20 increase in both awh and torque with the WRX (but the didn't list year of car) and "faster spool". I've also read that the aftermarket up-pipes are the same diameter as the stock one, they just don't have a cat?
1. Is it worth getting one?
2. What would I expect to see in performance over OEM?
3. Is the OEM up-pipe catted in 08+ (I read 06 and newer in one forum but nothing specifically 2011).
Thanks in advance!